The perforation of an elbow of heater in delayed coker in Oil Refinery of Liaoyang Petrochmical Company has been investigated by using OM,SEM,XRD.

• 对辽化炼油厂延迟焦化装置焦化炉辐射出口弯头穿孔破坏；进行了宏观形貌、金相、扫描电镜、X光衍射等分析.；结果表明；弯头管内流体的高温冲刷腐蚀是造成弯头穿孔破坏的原因。